CA1182402A - Air cleaner having a dust dumping valve - Google Patents
Air cleaner having a dust dumping valveInfo
- Publication number
- CA1182402A CA1182402A CA000407238A CA407238A CA1182402A CA 1182402 A CA1182402 A CA 1182402A CA 000407238 A CA000407238 A CA 000407238A CA 407238 A CA407238 A CA 407238A CA 1182402 A CA1182402 A CA 1182402A
- Authority
- CA
- Canada
- Prior art keywords
- dust
- housing
- air
- air cleaner
- trap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
- F02M35/084—Dust collection chambers or discharge sockets, e.g. chambers fed by gravity or closed by a valve
Abstract
IMPROVED AIR CLEANER HAVING A
DUST DUMPING VALVE
Abstract of the Disclosure An air cleaner for an internal combustion engine, having a dust dumping valve. The air cleaner includes an outer housing contianing a filter element and air is introduced into the housing and swirled outwardly before passing through the filter element for discharge.
The heavier dust particles in the air are moved under centrifugal force to the inner surface of the housing and are discharged through a conical outlet in the lower end of the housing to a dust trap. The lower end of the trap is provided with a plurality of open-ings which are enclosed by a flexible rubber-like disc.
When the engine is operating, the engine vacuum will draw the disc tightly against the openings to prevent the entrance of air into the trap. The weight of the dust collected in the trap in combination with the engine vibration will intermittently cause the rubber disc to drop away from the openings to discharge a portion of the collected dust. On stopping of the engine, the weight of the collected dust in the trap will open the disc valve to discharge the entire quantity of dust from the trap.
DUST DUMPING VALVE
Abstract of the Disclosure An air cleaner for an internal combustion engine, having a dust dumping valve. The air cleaner includes an outer housing contianing a filter element and air is introduced into the housing and swirled outwardly before passing through the filter element for discharge.
The heavier dust particles in the air are moved under centrifugal force to the inner surface of the housing and are discharged through a conical outlet in the lower end of the housing to a dust trap. The lower end of the trap is provided with a plurality of open-ings which are enclosed by a flexible rubber-like disc.
When the engine is operating, the engine vacuum will draw the disc tightly against the openings to prevent the entrance of air into the trap. The weight of the dust collected in the trap in combination with the engine vibration will intermittently cause the rubber disc to drop away from the openings to discharge a portion of the collected dust. On stopping of the engine, the weight of the collected dust in the trap will open the disc valve to discharge the entire quantity of dust from the trap.
Description
IMPROVED AIR CLEANEX H~VING A
DUST DUMPING VALVE
Background of th.e Invention Air cleaners are normally used with internal combustion engines in off-road equipment, such as trac-tors, bulldozers and the like, to filter the air before it is drawn into the en.gine. With the use of off-road e~uipment, the air being drawn to the engine can contain substantial quantities of solid particles or dusk, and it is desirable to separate the larger size dust particles from the air beore the air is passed through the filter in the air cleaner in order to prevent prema-ture clogginy of the filter.
U. S~ Patents 3,31~,~0~ and 3,~29,108, show air cleaner constructions in which the air bein~ drawn into the cleaner i~ initially swirled outwardly again~t the inner surface oE the cleaner housing which serves to sepa~at~ the larg~r solid partic.~es or dust Erom the air s~ream. The air then flows through a cen-tral filter Z0 to -the engine, while -the separa-ted particles are pa~secl through an outle-t -tube in the lower end of the housing and are aollected in a flexible rubber-like dus-t-dumpiny valve.
The valves, as disclosed in the aforementioned pa-tents, are designed to collect and intermittently dump the dust. In general, the valves are constructed with an upper generally cylindrical portion, which acts as a trap to collect the dust, and the cylindrical por-tion terminates in a pair of lower lips which seal toge-ther under the influence of -the engine vacuum.
With valves of -this type, -the weigh-t of -the dust collec-ted in the -trap, along wi-th -the engine vibra-tion will .inlermikten-tly cause the lips to open to dump or discharge a portion of the dust in -the -trap. On termination oE engine opera-tion, the weiyht of the dust will cause the lips to open to discharge the entire quantity of collec-ted dust from -the trap.
The lip-type dumping valves as used in the past have certain disadvantages. As the valves are normally ins-talled in an exposed loca-tion, and as they are formed out of flexible rubber-like ma-terial, they are frequentl~
subjected to damage. In addition, the continual expos ure to weather can cause rapid ~eteriora-tion oE the rubber-like material.
It has also been found that -the lip-type valves do not completely seal under the influence of the engine vacuum, with -the result that small amounts of air are drawn through the valve into the air cleaner and this decreases the efficiency of the dust collection.
Summary of the Invertion The invention relates to an i~proved air cleaner for an internal combustion engine havin~ a dust collect-:ing ancl d~1mping mechanism~ In accordance with the invent~on, a transverse wall is spaced rom an end wall oE -the a.ir cl~aner housiny and divides the housiny into a main Eilter chamber and an end chamber. The upper peripheral edrJe of the transverse wall has a cut-out or notch which provides communica-tion between the two chambers. The lower end of -the housing is provided with a generally conical outlet that straddles the trans-verse wall and the lower small diameter end of the outlet communicates with an enlarged diameter container or trap~ Moun-ted on the lower end of the -trap is a flexible pressure responsive valve which can take the form of a flexible rubber-like disc that is mounted flatwise against the bottom sur~ace o the trap and encloses a plurality of openings in the bo-t-tom surface.
During normal opera-tion of -the encline, the disc will be drawn ticJhtly ayainst the openings to seal -the same.
Durirlg engine operation, -the air being drawn to the cleaner will be swirled ou-twardly and the heavier clust particles will pass through the notch in the trans-verse wall into the end chamber and then -through the conical ou-tlet to the trap. O-ther clust particles having lesser inertia will be swirled agains-t the inner surface oE the transverse wall and can drop into the conical outlet Eor collection in the trap. This construction provides two separa-te routes for the passage of dust particles into the trap and -thexeby improves the effici-ency of the air cleaner The weight of the dust collected in the trap, along with the engine vibration will intermitten-tly cause the rubber~like disc valve to open, to thereby discharge a portion of the dust Erom the trap. When opera-tion of -the engine is -terminated, the weight of the dus-t in the -trap will open the disc-like valve to discharge the entire ~luant:ity oE dust.
The cons-truc-tion oE the :invention has distinc-t advantages over air cleaners as used in the past. The dumping valve oE the invention provides a positive seal dur:in~ periods oE engine opera-tion. ~'he engine vacuum will draw the rubber-like disc fla-t~7ise against the lower surEace oE the trap to comple-tely close oEf the open:ings and prevent -the entrance of air into the air cleaner. This greatly improves the air cleaner efficiency.
The conical outle-t provides a relatively large dust collecting opening communica-ting with both the main filtering chamber and the end chamber, which aids in the collection of dus-t, while the lower, small dia-meter end of the conical ou-tle-t functions to prevent the dust within -the -trap from being drawn back into -the air cleaner by vir-tue of -the engine vacuum.
The air cleaner oE the invention can also be readily adapted to aspira-ting muffler systems by merely connecting the lower end oE the trap -to -the aspirating tube of the muff:Ler. When used in an aspira-tincJ sys-tem, the disc-like valve serves a second function and oper-ates as a check valve to prevent back flow -through the air cleaner.
Other objects and advantages will appear in the course of the following description.
Description of the Drawings The drawings illustra-te the best mode presently con-templated of carrying ou-t the invention.
In the drawings:
Fig. 1 is a vertical section of an air cleaner constructed in accordance with the invention;
Fiy. 2 is a section taken along line 2-2 of Fig. l;
Fig~ 3 is a section ta]cen along line 3-3 o:E
Fiy. l;
Fig. ~ is a section taken along line ~-~ of Fig. l; ancd Fig. 5 is an enlarged ~ragmentary vert.ical section showi.n~ -the dust durnpincJ valve.
Descript on o~ the Preferred Embod:iment '~he drawings illustrate an air cleaner ~or an inte~nal corrlbustion engine as used in oEf-road e~uip-men-t, su~h as -trac-tors, .road ~raders, bulldozers, and the like.
The air cleaner includes an outer cylindrical CasincJ 1 which is mounted horizontally and one end of the casiny is enclosed by head 2 while the opposite end of -the casing is enclosed by a cup-shaped head 3~
Located within the casing is a Eilter assembly 4 which is composed of an outer perEorated metal sleeve 5, an inner perforated metal sleeve 6 and an intermediate layer o fibrous filtering material 7. One end of the filter assembly ~ is connected to end member 8, while the opposite end of the Eilter asser~bly is secured to end ring 9 whic:h is spaced from the head 2 by an annular resilient gasket 10.
An outlet tube 11 is securea within an opening in the head 2 and a plurality of braces 12 are connected to the outlet tube and extend within the open center of the filter assembly ~. As shown in Fig. 1, the con-verging ends of braces 12 are a-ttached to the head of stud 13 which extends through aligned openings in the end member 8, the inner wall 1.4, and head 3. A cap 15 is threaded onto the outer end of the stud 13, while a wing nut 16 is threaded on the central portion of the stud and bears against the end member 8. By tightening down the nut 16, the filter assembly 4 will be brought into engagement with the head 2 to retain the filter assembly in proper alignment within the casing 1.
As best illustrated in Fig~ 2, the edge o:E the wall 14 is cut away -to provide a notch 17 which provides communication be-tween the interior of -the casing 1 and the charn~er 18 deEinecl by head 3 and wall 14~
~l.r is clrawn i.n-to -tha casing :I th.rough an inlet tube :L9 which extends -throuyh an openlng in the upper por-tion o:E -the casing 1, and the .incoming air passes in-to the annular chamber definecl by the casincJ 1 and annular wall 20. The air then E10WS through a series of louvers 21 which causes the air -to swirl outwarclly against the inner surEace oE the casiny 1. The heavier dus-t par-ticles in the air are thrown outwardly against the casing wall and pass throucJh -the notch 17 into the chamber 18, while the air con-taining the lighter par-ticles passes radially inwardly through -the filter assembly ~ and is discharged from the outlet 11 to the engine.
In accordance wi-th the invention, a clus-t collect ing and dumping assembly communica-tes with the lower end of -the chamber 18, and -the assembly includes a generally coni.c:a]. outlet 22 having a large diameter upper end which connects with chamber 18 and a small diameter lower end which is secured within an opening in the upper surface of a cup-shaped trap or con-tainer 23.
The ~Lower end of -the trap 23 is closed off by a flanged plate 24, and -the plate is provided with a plurality of openings or holes 25 which are arranged in a generally circular pattern about the cen-tral axis of -the plate. Mounted agains-t: the lower surface oE the plate 2~ is a ~lexible rubber--like disc or valve 26 which seals the openinys 25. The disc valve 26 is rnounted on the plate 25 by means of a washer 27 and screw 23.
The incoming air is swirled outwardly by the louvers 21 and the heavier dust particles will be thrown outwardly against the wall of the casing and pass through the notch 17 into the chamber 18, and then through the outlet 22 to the trap 23. In addition, some of the lighter weight particles will swirl out-wardly against the inner surfacc o:E thc wall 1~ and, as the enlarcJed open encl oE the cone 22 extencls to either sicl~ oE the divider wa:Ll l~, the par tic:les sw.irled outwardly against -the wall 1~ can clrop through -the gap ~9 ln-to -the cone :Eor collection in the -trap 23 .
Wi-th -thi.s cons-truc-tion, -two rou-tPs are provided Eor the entry of the dust particles in-to the cone-shaped out-let 22, one being through -the chamber 18 and the second being through the space 29.
During operation of the engine, -the engine vacuum will draw the rubber disc 26 tiyhtly against the lower surface o~ the plate 2~, closing off the openings 25 and preventing atmospheric air from entering the air cleaner thro~h -the trap 23. The weight of the dust collected in the trap 23, in combina-tion with -the vibration and pulsa-tion of the en~ine, will inter-mittently cause the disc valve 26 to open, to thereby dischar~e a por-tion of the dust accumulatecl in the trap.
This intermi-ttent discharge o:E dust will occur during en~ine operat.ion. When operation of the engine is terminated th.e weight of the dus-t will overcome the resiliency oE the disc valve 26 to open the valve and permit a:ll oE the dust collec-ted in the trap to be dis-charged. Thus, the valve of -the invention prov.ides for intermittent discharge of the collected dust during engine opera-tion and complete discharge of the accum-ulated dust on termination of engine operation.
As the rubber-like valve 25 is located upwardly within khe trap 23, it is in a protected position where it is not exposed to the elements and will not be accidentally damaged.
The valve 26 is adapted to seal flatwise against the lower surface of plate 24, comple-tely closing off th~ openings and thus preventiny the entrance of akmos-pheric air into the trap. By preventing the entry of air into the trap, the efficiency of the air cleansr is improved~
Th~ air cleaner oE the ~nvention can be adapt~d to aspiratiny muEfler systemC3 by COnnectinCJ a hose between the lower end oE the -trap 23 and the a~pirating tube oE the muEEler. ~i-th a systern of this type, the aspirakincJ eEec-t, duriny engine operation, will con-tinuously hold the rubber valve 26 in -the open position, but the valve will unction as a check valve to prevent reverse flow khrough the trap 23 in the event of bac]
10w or back fire of the engine.
The dus-t dumping valve assembly of the inven-tion can be used with various -types and conEigura-tions oE air cleaners. As illustrated in -the drawin~s, a single filter assembly 4 is utilized, but in other installations, mul-tiple filter assemblies can be used.
It is also contemplated that in certain air cleaners, the filter assembly can extend to a posi-tion adjacen-t the head 3, and in such cases, the internal wall 14 would be elimina-ted.
DUST DUMPING VALVE
Background of th.e Invention Air cleaners are normally used with internal combustion engines in off-road equipment, such as trac-tors, bulldozers and the like, to filter the air before it is drawn into the en.gine. With the use of off-road e~uipment, the air being drawn to the engine can contain substantial quantities of solid particles or dusk, and it is desirable to separate the larger size dust particles from the air beore the air is passed through the filter in the air cleaner in order to prevent prema-ture clogginy of the filter.
U. S~ Patents 3,31~,~0~ and 3,~29,108, show air cleaner constructions in which the air bein~ drawn into the cleaner i~ initially swirled outwardly again~t the inner surface oE the cleaner housing which serves to sepa~at~ the larg~r solid partic.~es or dust Erom the air s~ream. The air then flows through a cen-tral filter Z0 to -the engine, while -the separa-ted particles are pa~secl through an outle-t -tube in the lower end of the housing and are aollected in a flexible rubber-like dus-t-dumpiny valve.
The valves, as disclosed in the aforementioned pa-tents, are designed to collect and intermittently dump the dust. In general, the valves are constructed with an upper generally cylindrical portion, which acts as a trap to collect the dust, and the cylindrical por-tion terminates in a pair of lower lips which seal toge-ther under the influence of -the engine vacuum.
With valves of -this type, -the weigh-t of -the dust collec-ted in the -trap, along wi-th -the engine vibra-tion will .inlermikten-tly cause the lips to open to dump or discharge a portion of the dust in -the -trap. On termination oE engine opera-tion, the weiyht of the dust will cause the lips to open to discharge the entire quantity of collec-ted dust from -the trap.
The lip-type dumping valves as used in the past have certain disadvantages. As the valves are normally ins-talled in an exposed loca-tion, and as they are formed out of flexible rubber-like ma-terial, they are frequentl~
subjected to damage. In addition, the continual expos ure to weather can cause rapid ~eteriora-tion oE the rubber-like material.
It has also been found that -the lip-type valves do not completely seal under the influence of the engine vacuum, with -the result that small amounts of air are drawn through the valve into the air cleaner and this decreases the efficiency of the dust collection.
Summary of the Invertion The invention relates to an i~proved air cleaner for an internal combustion engine havin~ a dust collect-:ing ancl d~1mping mechanism~ In accordance with the invent~on, a transverse wall is spaced rom an end wall oE -the a.ir cl~aner housiny and divides the housiny into a main Eilter chamber and an end chamber. The upper peripheral edrJe of the transverse wall has a cut-out or notch which provides communica-tion between the two chambers. The lower end of -the housing is provided with a generally conical outlet that straddles the trans-verse wall and the lower small diameter end of the outlet communicates with an enlarged diameter container or trap~ Moun-ted on the lower end of the -trap is a flexible pressure responsive valve which can take the form of a flexible rubber-like disc that is mounted flatwise against the bottom sur~ace o the trap and encloses a plurality of openings in the bo-t-tom surface.
During normal opera-tion of -the encline, the disc will be drawn ticJhtly ayainst the openings to seal -the same.
Durirlg engine operation, -the air being drawn to the cleaner will be swirled ou-twardly and the heavier clust particles will pass through the notch in the trans-verse wall into the end chamber and then -through the conical ou-tlet to the trap. O-ther clust particles having lesser inertia will be swirled agains-t the inner surface oE the transverse wall and can drop into the conical outlet Eor collection in the trap. This construction provides two separa-te routes for the passage of dust particles into the trap and -thexeby improves the effici-ency of the air cleaner The weight of the dust collected in the trap, along with the engine vibration will intermitten-tly cause the rubber~like disc valve to open, to thereby discharge a portion of the dust Erom the trap. When opera-tion of -the engine is -terminated, the weight of the dus-t in the -trap will open the disc-like valve to discharge the entire ~luant:ity oE dust.
The cons-truc-tion oE the :invention has distinc-t advantages over air cleaners as used in the past. The dumping valve oE the invention provides a positive seal dur:in~ periods oE engine opera-tion. ~'he engine vacuum will draw the rubber-like disc fla-t~7ise against the lower surEace oE the trap to comple-tely close oEf the open:ings and prevent -the entrance of air into the air cleaner. This greatly improves the air cleaner efficiency.
The conical outle-t provides a relatively large dust collecting opening communica-ting with both the main filtering chamber and the end chamber, which aids in the collection of dus-t, while the lower, small dia-meter end of the conical ou-tle-t functions to prevent the dust within -the -trap from being drawn back into -the air cleaner by vir-tue of -the engine vacuum.
The air cleaner oE the invention can also be readily adapted to aspira-ting muffler systems by merely connecting the lower end oE the trap -to -the aspirating tube of the muff:Ler. When used in an aspira-tincJ sys-tem, the disc-like valve serves a second function and oper-ates as a check valve to prevent back flow -through the air cleaner.
Other objects and advantages will appear in the course of the following description.
Description of the Drawings The drawings illustra-te the best mode presently con-templated of carrying ou-t the invention.
In the drawings:
Fig. 1 is a vertical section of an air cleaner constructed in accordance with the invention;
Fiy. 2 is a section taken along line 2-2 of Fig. l;
Fig~ 3 is a section ta]cen along line 3-3 o:E
Fiy. l;
Fig. ~ is a section taken along line ~-~ of Fig. l; ancd Fig. 5 is an enlarged ~ragmentary vert.ical section showi.n~ -the dust durnpincJ valve.
Descript on o~ the Preferred Embod:iment '~he drawings illustrate an air cleaner ~or an inte~nal corrlbustion engine as used in oEf-road e~uip-men-t, su~h as -trac-tors, .road ~raders, bulldozers, and the like.
The air cleaner includes an outer cylindrical CasincJ 1 which is mounted horizontally and one end of the casiny is enclosed by head 2 while the opposite end of -the casing is enclosed by a cup-shaped head 3~
Located within the casing is a Eilter assembly 4 which is composed of an outer perEorated metal sleeve 5, an inner perforated metal sleeve 6 and an intermediate layer o fibrous filtering material 7. One end of the filter assembly ~ is connected to end member 8, while the opposite end of the Eilter asser~bly is secured to end ring 9 whic:h is spaced from the head 2 by an annular resilient gasket 10.
An outlet tube 11 is securea within an opening in the head 2 and a plurality of braces 12 are connected to the outlet tube and extend within the open center of the filter assembly ~. As shown in Fig. 1, the con-verging ends of braces 12 are a-ttached to the head of stud 13 which extends through aligned openings in the end member 8, the inner wall 1.4, and head 3. A cap 15 is threaded onto the outer end of the stud 13, while a wing nut 16 is threaded on the central portion of the stud and bears against the end member 8. By tightening down the nut 16, the filter assembly 4 will be brought into engagement with the head 2 to retain the filter assembly in proper alignment within the casing 1.
As best illustrated in Fig~ 2, the edge o:E the wall 14 is cut away -to provide a notch 17 which provides communication be-tween the interior of -the casing 1 and the charn~er 18 deEinecl by head 3 and wall 14~
~l.r is clrawn i.n-to -tha casing :I th.rough an inlet tube :L9 which extends -throuyh an openlng in the upper por-tion o:E -the casing 1, and the .incoming air passes in-to the annular chamber definecl by the casincJ 1 and annular wall 20. The air then E10WS through a series of louvers 21 which causes the air -to swirl outwarclly against the inner surEace oE the casiny 1. The heavier dus-t par-ticles in the air are thrown outwardly against the casing wall and pass throucJh -the notch 17 into the chamber 18, while the air con-taining the lighter par-ticles passes radially inwardly through -the filter assembly ~ and is discharged from the outlet 11 to the engine.
In accordance wi-th the invention, a clus-t collect ing and dumping assembly communica-tes with the lower end of -the chamber 18, and -the assembly includes a generally coni.c:a]. outlet 22 having a large diameter upper end which connects with chamber 18 and a small diameter lower end which is secured within an opening in the upper surface of a cup-shaped trap or con-tainer 23.
The ~Lower end of -the trap 23 is closed off by a flanged plate 24, and -the plate is provided with a plurality of openings or holes 25 which are arranged in a generally circular pattern about the cen-tral axis of -the plate. Mounted agains-t: the lower surface oE the plate 2~ is a ~lexible rubber--like disc or valve 26 which seals the openinys 25. The disc valve 26 is rnounted on the plate 25 by means of a washer 27 and screw 23.
The incoming air is swirled outwardly by the louvers 21 and the heavier dust particles will be thrown outwardly against the wall of the casing and pass through the notch 17 into the chamber 18, and then through the outlet 22 to the trap 23. In addition, some of the lighter weight particles will swirl out-wardly against the inner surfacc o:E thc wall 1~ and, as the enlarcJed open encl oE the cone 22 extencls to either sicl~ oE the divider wa:Ll l~, the par tic:les sw.irled outwardly against -the wall 1~ can clrop through -the gap ~9 ln-to -the cone :Eor collection in the -trap 23 .
Wi-th -thi.s cons-truc-tion, -two rou-tPs are provided Eor the entry of the dust particles in-to the cone-shaped out-let 22, one being through -the chamber 18 and the second being through the space 29.
During operation of the engine, -the engine vacuum will draw the rubber disc 26 tiyhtly against the lower surface o~ the plate 2~, closing off the openings 25 and preventing atmospheric air from entering the air cleaner thro~h -the trap 23. The weight of the dust collected in the trap 23, in combina-tion with -the vibration and pulsa-tion of the en~ine, will inter-mittently cause the disc valve 26 to open, to thereby dischar~e a por-tion of the dust accumulatecl in the trap.
This intermi-ttent discharge o:E dust will occur during en~ine operat.ion. When operation of the engine is terminated th.e weight of the dus-t will overcome the resiliency oE the disc valve 26 to open the valve and permit a:ll oE the dust collec-ted in the trap to be dis-charged. Thus, the valve of -the invention prov.ides for intermittent discharge of the collected dust during engine opera-tion and complete discharge of the accum-ulated dust on termination of engine operation.
As the rubber-like valve 25 is located upwardly within khe trap 23, it is in a protected position where it is not exposed to the elements and will not be accidentally damaged.
The valve 26 is adapted to seal flatwise against the lower surface of plate 24, comple-tely closing off th~ openings and thus preventiny the entrance of akmos-pheric air into the trap. By preventing the entry of air into the trap, the efficiency of the air cleansr is improved~
Th~ air cleaner oE the ~nvention can be adapt~d to aspiratiny muEfler systemC3 by COnnectinCJ a hose between the lower end oE the -trap 23 and the a~pirating tube oE the muEEler. ~i-th a systern of this type, the aspirakincJ eEec-t, duriny engine operation, will con-tinuously hold the rubber valve 26 in -the open position, but the valve will unction as a check valve to prevent reverse flow khrough the trap 23 in the event of bac]
10w or back fire of the engine.
The dus-t dumping valve assembly of the inven-tion can be used with various -types and conEigura-tions oE air cleaners. As illustrated in -the drawin~s, a single filter assembly 4 is utilized, but in other installations, mul-tiple filter assemblies can be used.
It is also contemplated that in certain air cleaners, the filter assembly can extend to a posi-tion adjacen-t the head 3, and in such cases, the internal wall 14 would be elimina-ted.
Claims (8)
1. An air cleaner assembly for an internal combustion engine, comprising a housing having an air inlet and an air outlet adapted to communicate with the engine, filter means disposed in the housing between the inlet and the outlet, an outlet tube disposed in the lower portion of the housing, said outlet tube having a large diameter upper end communicat-ing with said housing and a small diameter lower end, a dust collecting container communicating with the lower end of the outlet tube and having a substantially greater cross-sectional area than said lower end of the outlet tube, said container having a lower surface spaced below said small diameter lower end, said lower surface of said container having opening means, a flexible sheet-like valve member disposed flatwise against the underside of the lower surface of said container, said valve member disposed to close off said opening means during periods of engine operation, dust being collected in said container, said valve member being constructed to move to an open position by the weight of collected dust in the container to thereby permit the dust to be discharged through said opening means, said small diameter lower end minimizing the draw back of dust from said container into said housing by engine vacuum when said valve member is opened.
2. The air cleaner assembly of claim 1, and including a closed divider wall extending across said housing and dividing said housing into a first chamber and a second filtering chamber, said filter means disposed within the
2. The air cleaner assembly of claim 1, and including a closed divider wall extending across said housing and dividing said housing into a first chamber and a second filtering chamber, said filter means disposed within the
Claim 2 cont'd. . . . . .
filtering chamber, said wall having a peripheral opening establishing communication between said chambers, the lower portion of said first chamber being connected to said outlet tube.
filtering chamber, said wall having a peripheral opening establishing communication between said chambers, the lower portion of said first chamber being connected to said outlet tube.
3. The air cleaning assembly of claim 2, wherein said peripheral opening is located at the upper end of the housing.
4. The air cleaner assembly of claim 2, wherein said divider wall extends vertically and the upper end of the outlet tube extends horizontally to either side of the lower end of the wall, whereby dust can enter said outlet tube from both of said chambers.
5. The air cleaner assembly of claim 1, wherein said opening means comprises a plurality of circumferentially spaced ports, and said valve member is connected to said lower surface at a location disposed centrally of said circumferentially disposed ports.
6. The air cleaner of claim 1, wherein the upper end of the container has an aperture and the lower end of the outlet tube is secured within the aperture.
7. The air cleaner assembly of claim 1, wherein said opening means comprises a plurality of circumferentially spaced dust discharge openings, and a rigid disc disposed against the underside of said valve member, the periphery of said disc being disposed radially inward and adjacent said openings.
8. The air cleaner assembly of claim 4, and including means disposed within the housing for swirling the air outwardly against the housing wall so that heavier weight dust particles are swirled outwardly within said filtering chamber and pass through said peripheral opening into said
8. The air cleaner assembly of claim 4, and including means disposed within the housing for swirling the air outwardly against the housing wall so that heavier weight dust particles are swirled outwardly within said filtering chamber and pass through said peripheral opening into said
Claim 8 cont'd. . . . . .
first chamber and then pass through said outlet tube into said dust collecting container, and lighter weight dust particles are swirled against said divider wall and pass through said outlet tube into said dust collecting container.
first chamber and then pass through said outlet tube into said dust collecting container, and lighter weight dust particles are swirled against said divider wall and pass through said outlet tube into said dust collecting container.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US257,888 | 1981-07-29 | ||
| US06/287,888 US4388091A (en) | 1981-07-29 | 1981-07-29 | Air cleaner having a dust dumping valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1182402A true CA1182402A (en) | 1985-02-12 |
Family
ID=23104808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000407238A Expired CA1182402A (en) | 1981-07-29 | 1982-07-14 | Air cleaner having a dust dumping valve |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4388091A (en) |
| CA (1) | CA1182402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4240048A1 (en) * | 1992-11-28 | 1994-06-01 | Knecht Filterwerke Gmbh | Flap valve discharging dust from an oscillating pressure gas cleaner - partic. air filter on compressor or i.c. engine used in dusty environment |
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| US4697668A (en) * | 1986-01-13 | 1987-10-06 | Nelson Industries Inc. | Aspirating muffler |
| JPS6367307A (en) * | 1986-09-09 | 1988-03-26 | 豊和工業株式会社 | Fine dust separator in air stream cleaning vehicle |
| US4735640A (en) * | 1987-06-08 | 1988-04-05 | General Motors Corporation | Air cleaner liquid drain and filter assembly |
| US5059222A (en) * | 1990-09-25 | 1991-10-22 | Smith Daniel R | Engine air precleaner |
| JP3713865B2 (en) * | 1997-01-23 | 2005-11-09 | 株式会社デンソー | Intake device for internal combustion engine |
| US6605131B2 (en) | 2000-06-13 | 2003-08-12 | Siemens Vdo Automotive Inc. | Integrated active noise control with self-cleaning filter apparatus |
| EP1290333A1 (en) * | 2000-06-13 | 2003-03-12 | Siemens VDO Automotive Inc. | Integrated active noise control with self-cleaning filter apparatus |
| DE10128788A1 (en) * | 2001-06-13 | 2002-12-19 | Stihl Maschf Andreas | Air intake device for IC engines of hand-held chain saws etc. has closure unit to feed dust separate in air filter into carrier air flow for removal |
| US7004987B2 (en) | 2002-03-28 | 2006-02-28 | Case Corporation | Intake air pre-cleaner with aspirator port chamber for collecting and holding particles for later aspiration |
| DE10316652B4 (en) * | 2003-04-11 | 2015-08-06 | Volkswagen Ag | Air filter for an internal combustion engine |
| US20050284802A1 (en) * | 2004-06-23 | 2005-12-29 | Jankuski George A | Filtering device with integral filter status indicator |
| US7188599B2 (en) * | 2005-07-11 | 2007-03-13 | Deere & Company | Sump for cooling package air intake housing of an agricultural machine |
| WO2007047433A2 (en) * | 2005-10-12 | 2007-04-26 | Kohler Co. | Air cleaner assembly |
| EP2708273B1 (en) * | 2006-06-19 | 2019-03-20 | Donaldson Company, Inc. | Air cleaner with pulse jet reverse cleaning |
| US7942947B2 (en) * | 2006-09-26 | 2011-05-17 | Aisan Kogyo Kabushiki Kaisha | Dust filter |
| CA2718531C (en) * | 2008-03-20 | 2017-01-03 | Donaldson Company, Inc. | Evacuation valve arrangements; pulse jet air cleaner systems using same; and, methods |
| USD632770S1 (en) | 2008-06-13 | 2011-02-15 | Kohler Co. | Cyclonic air cleaner housing |
| US8808432B2 (en) * | 2008-06-13 | 2014-08-19 | Kohler Co. | Cyclonic air cleaner |
| US8074672B2 (en) * | 2009-03-12 | 2011-12-13 | Cummins Filtration Ip, Inc. | Inertially activated ejection valve |
| US8752736B2 (en) * | 2009-07-15 | 2014-06-17 | Mann+Hummel Gmbh | Self actuating rotary dust valve |
| WO2011102934A1 (en) | 2010-01-22 | 2011-08-25 | Donaldson Company, Inc. | Pulse jet air cleaner systems; evacution valve arrangements; air cleaner components; and, methods |
| WO2014110354A2 (en) | 2013-01-14 | 2014-07-17 | Cummins Filtration Ip, Inc. | Cleanable filter |
| CN103629020B (en) * | 2013-11-29 | 2016-04-13 | 长城汽车股份有限公司 | Vertical air filter |
| BR102015000957A2 (en) * | 2015-01-15 | 2016-07-19 | Mahle Int Gmbh | contaminant ejection valve |
| BR102015000958A2 (en) * | 2015-01-15 | 2016-07-19 | Mahle Int Gmbh | contaminant ejection valve |
| KR101956350B1 (en) * | 2016-12-19 | 2019-03-08 | 말레동현필터시스템 주식회사 | Air cleaner |
| DE102018000544A1 (en) | 2018-01-24 | 2019-07-25 | Mann+Hummel Gmbh | Filter device, in particular for gas filtration |
| CN108301946A (en) * | 2018-01-29 | 2018-07-20 | 金相律 | A kind of cyclone air cleaner |
| CN109578181A (en) * | 2019-01-28 | 2019-04-05 | 上海邗越智能科技有限公司 | A kind of self-cleaning air filter and its control system |
| US11547964B2 (en) * | 2019-08-07 | 2023-01-10 | Caterpillar Inc. | Actuated air filter dust valve |
| DE102020108055A1 (en) * | 2020-03-24 | 2021-09-30 | Mann+Hummel Gmbh | Particle discharge device, filter assembly and method |
| CN114412676B (en) * | 2022-02-10 | 2022-12-02 | 石家庄欧亚惠通滤清器有限公司 | Automatic ash discharging filter |
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1981
- 1981-07-29 US US06/287,888 patent/US4388091A/en not_active Expired - Lifetime
-
1982
- 1982-07-14 CA CA000407238A patent/CA1182402A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4240048A1 (en) * | 1992-11-28 | 1994-06-01 | Knecht Filterwerke Gmbh | Flap valve discharging dust from an oscillating pressure gas cleaner - partic. air filter on compressor or i.c. engine used in dusty environment |
| DE4240048C2 (en) * | 1992-11-28 | 2002-11-07 | Mahle Filtersysteme Gmbh | Dust discharge valve |
Also Published As
| Publication number | Publication date |
|---|---|
| US4388091A (en) | 1983-06-14 |
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| MKEC | Expiry (correction) | ||
| MKEX | Expiry |